Ceph 1 mds daemon damaged. a [INF] Standby daemon mds.
Ceph 1 mds daemon damaged If step 1 succeeds the standby daemons will most likely also start successfully. 4 full-object read crc 0x6fc2f65a Orange: MDS is in transient state trying to become active. Shape Circle: an MDS holds this state. Permalink. docker-cloud mons docker-cloud,docker01,docker02,docker03 are low on available space Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. Get the MDS. . After many attempts to achieve something with the orchestrator, we set the MDS to “failed” and Hi, my ceph cluster mds is damaged and the cluster is degraded after our enable it by using "ceph mds repaired 0", then start the daemon and see how it is failing. li@xxxxxxxxxxxxx>; Date: Tue, 23 May 2023 22:03:50 +0000; Accept-language: en-GB, en-US; Cc We backported a wrong patch to 13. 1 [ERR] 2. c assigned to filesystem cephfs as rank 0 2021-05-22 23:30:00. 7k次。本文详细介绍了在Ceph文件系统遭遇意外重置或元数据池对象被误删的情况下，如何利用快照进行数据恢复的过程。通过实例演示，展示了如何记录元数据池对象名称，创建快照，以及在数据丢失后，如何利用快照回滚数据，恢复文件系统目录树，为数据安全提供了一种 Failed - A rank is failed if it is not associated with an instance of the MDS daemon. You can use the command-line interface or Ansible playbook to add or remove an MDS server. 0 is damaged? Beta Was this translation helpful? Give feedback. 0 is damaged $ ceph mds stat ocs-storagecluster-cephfilesystem:0/1 2 You may find out about damage from a health message, or in some unfortunate cases from an assertion in a running MDS daemon. yesterday i have update pve v6 to v7 and my ceph-cluster from v15 to v16 and i thought all working fine. 7k次。本文介绍Ceph文件系统中MDS缓存的配置方法，包括如何将缓存大小从默认的1GB调整到5GB，并提供了解决因不合理缓存设置导致的问题的步骤。通过重启MDS服务和正确配置缓存限制，可以避免MDS报告缓存过大的错误。 HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline , 1 mds daemon damaged - Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until the metadata is repaired. Category:- The test runs periodic `flush journal` command and the ceph cli core dumps 11. One of the standby A few days ago, the CephFS file systems became inaccessible, with the message MDS_DAMAGE: 1 mds daemon damaged The cephfs-journal-tool tells us: "Overall journal integrity: OK" The usual attempts with redeploy were unfortunately not successful. k has 20% avail mon. 集群ERR; 发现mds0: Metadata damage detected; 查看damage ino; 根据ino定位跟踪目录; 根据目录名知道业务存储的数据; 修复问题; 12. downgrade ceph to 13. data data 14. Yes, I agree, I just can't tell what the best way is here, maybe remove all three objects from the disks (make a backup before doing that, just in case) and try the steps to recover the Ceph FAQ 1. [ERR] MDS_DAMAGE: 1 mds daemon damaged fs postgresfs mds. 重新部署 Ceph MDS; 6. Delete MDS daemons can identify a variety of unwanted conditions, and indicate these to the operator in the output of ceph status. rgw: 1 daemon active data: pools: 9 pools, 1584 pgs objects: 1093 objects, 418 MB usage: 2765 MB used, 6797 GB / 6799 GB avail pgs: 1584 active+clean io: mds rank(s) <ranks> are damaged One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until the metadata is repaired. 3. 修复方案 12. 5T cephfs_data data 188T 14. 032+0000 7f12a4dc5600 1 main not setting numa affinity debug 2021-09-30T20:05:23. gz01 failing to respond to cache pressure How to failover an MDS daemon In a Ceph cluster with more than one MDS daemon running, to promote a standby MDS to active, it is necessary to fail one of the current active MDS daemons. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again 1. meta metadata 207k 98. Lines MDS_DAMAGE 1 mds daemon damaged fs cephfs mds. 0 1 filesystem is offline 1 mds daemon damaged 2 daemons have recently crashed services: mon: 3 daemons, quorum ceph-mon-01,ceph-mon-02,ceph-mon-03 (age 41m) Post by Kevin Sorry for the long posting but trying to cover everything I woke up to find my cephfs filesystem down. mds rank(s) <ranks> are damaged One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until the metadata is repaired. Consequently, the practical maximum of max_mds for highly available systems is at most one Ceph MDS问题分析 1. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again Note, configuring MDS file system affinity does not change the behavior that standby-replay daemons are always selected before other standbys. amvgfe Reqs: 8 /s [ERR] MDS_ALL_DOWN: 1 filesystem is offline fs postgresfs is offline because no MDS is active for it. Sorry for the trouble Yan, Zheng ceph-mds is the metadata server daemon for the Ceph distributed file system. 使用命令行界面删除 Ceph MDS; 6. 026231 7fa3b57ce700 -1 log_channel(cluster) log [ERR] : Health check update: 1 mds daemon damaged (MDS_DAMAGE) Ceph OSD Status: (The missing and oud osd's are in a different pool from all data, these were the bad ssds that caused the issue) 问题：ceph多 mds机制下，重启mds有个cephfs出现degraded的状态，而且备份的mds一直在rejoin。 分析：. [WRN] MDS_UP_LESS_THAN_MAX: 1 filesystem is online with fewer MDS than max_mds fs cephfs has 0 MDS online, but wants 1 在创建cephfs的时候，ceph集群 Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. 44 is active+clean+inconsistent, acting [0,2,1] # ceph osd lspools 2 cephfs_metadata 3 cephfs_data 4 rbd # ceph pg repair 2. All reactions (stable), process ceph-mds, pid 1 debug 2021-09-30T20:05:23. MDS服务器将元数据以segments(object)方式存放，当MDS中的segments数量超出mds_log_max_segments的设置值（默认为128）时，MDS服务开始启动Trimming，即将segments数据进行回写。OSDs之间会相互测试（ping）访问速度，若两个OSDs之间的连接延迟高于1s，则表示OSDs之间的延迟太高，不利于CEPH集群的数据存储和访问。 HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline, 1 mds daemon damaged -Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 在CEPH中，块和对象是不用MDS的，在其文件系统中，元数据服务器MDS才是必不可少的。Ceph MDS为基于POSIX文件系统的用户提供了一些基础命令，例如ls、find等命令。Ceph FS（Ceph File System）中引入了MDS（Metadata Server），主要是为兼容POSIX文件系统提供元数据，一般都是当做文件系统来挂载。 Subject: Re: [Help appreciated] ceph mds damaged; From: Justin Li <justin. osd: 5 osds: 5 up, 5 [ERR] MDS_DAMAGE: 1 mds daemon damaged fs ocs-storagecluster-cephfilesystem mds. 9G cephfs_recovery - 0 clients ===== RANK STATE The mds responsible for the hdd filesystem is >> the one that died. the Ceph monitor marks the MDS daemon as laggy and automatically replaces it with a standby daemon if any is available. HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline , 1 mds daemon damaged - Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 The newly created rank (1) will pass through the ‘creating’ state and then enter this ‘active state’. a scrub_path / recursive repair. Intro to Ceph; Installation (ceph-deploy) Installation (Manual) Installation (Kubernetes + ffsb. Each ceph-mds daemon instance should have a unique name. The MDS is marked as damaged: [qs-admin@newbrunswick1 ~]$ sudo docker exec 696db49641b7 ceph -s cluster: id: 7a4265b6-605a-4dbc-9eaa-ec5d9ff62c2a We observed damaged MDS in our test cluster setups, which we are now finally able to relate to the usage of the administrative cephfs down command: (age 2m) mgr: ip-192-168-163-199. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until it is repaired. mds rank(s) <ranks> are damaged. for Ceph use ceph health in the Rook Ceph toolbox): HEALTH_ERR 1 filesystem is degraded; 1 filesystem has a failed mds daemon; 1 filesystem is offline; insufficient standby MDS daemons available What Happens When the Active MDS Daemon Fails. png大概意思是：从元数据存储池读取时，遇到了元数据损坏或丢失的情况。 One or more MDS ranks are not currently assigned to any MDS daemon. next day (today) some of my services goes down and throw errors, so i dig into and find my cephfs is down and cannot restart. 具体信息如下 [root@ceph-01 ~]# ceph -s cluster: id: c8ae7537-8693-40df-8943-733f82049642 health: HEALTH_WARN insufficient standby MDS daemons available services: mon: 3 daemons, quorum ceph-01,ceph-02,ceph-03 (age 45h) mgr: ceph-03(active, since 46h), standbys: ceph Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. Priority: Normal. Health check cleared: MDS_DAMAGE (was: 1 mds daemon damaged) 2021-05-22 23:30:00. e. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again 文章浏览阅读2. Ceph MDS 故障排除; 6. 133%), 3 pgs degraded, 3 pgs undersized Degraded data redundancy (low space): 6 pgs backfill_toofull Co-locating the MDS with other Ceph daemons (hyperconverged) is an effective and recommended way, as all daemons are configured to use available hardware within certain limits. 0 is damaged [WRN] MON_DISK_LOW: mons k,n,p are low on available space mon. 5T STANDBY MDS cephfs. Standby daemons . 使用 Ansible 删除 Ceph MDS; 6. <id> <path> recursive repair" on the path containing the primary dentry for the file (i. If the active MDS is still unresponsive after the specified time period has passed, the Ceph Monitor marks the MDS daemon as laggy. Use the following command to reset the MDS map to a single MDS: Ceph Metadata Server (MDS) daemons are necessary for deploying a Ceph File System. contents of the metadata pool) is somewhat recovered, it may be necessary to update the MDS map to reflect the contents of the metadata pool. How to recover? Re: One mds daemon damaged, filesystem is offline. Some examples: [user@edon-0 ~]# ceph fs status root - 88 clients ==== RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active root. 5. 222%); Reduced data availability: 213 pgs inactive, 73 pgs peering; Degraded data redundancy: 1120/5623682 objects degraded (0. Post by Lihang dumped fsmap epoch 168 fs_name TudouFS epoch 156 flags 0 created 2016-04-02 02:48:11. This example shows a system where there should be 1 Active MDS and 1 Standby MDS. docker02, mon. These conditions have human readable messages, and additionally All MDS are up:standby, "mds: 0/1 daemons up (1 failed), 2 standby". Black: MDS is indicating a state that causes the rank to be marked damaged. 通过监控发现集群状态是HEALTH_ERR状态， 并且发现mds0: Metadata damage detected。 顾名思义，猜测应该是元信息损坏导致的。 从元数据存储池读取时，遇到了元数据损坏或丢失的情况。这条消息表明损坏之处已经被妥善隔离了，以使 2020-02-07 07:25:16. 部署cephfs服务 ceph FS即ceph filesystem，可以实现文件系统共享功能（POSIX标准），客户端通过ceph协议挂载并使用ceph集群作为 The newly created rank (1) will pass through the ‘creating’ state and then enter this ‘active state’. This was in the logs 2018-07-11 05:54:10. g. 667%) Degraded data redundancy: 34149/1090116 objects degraded (3. The name is used to identify daemon instances in the ceph. CephFS重启主元数据服务进程时（MDS），触发了Ceph社区已发现但未解决的bug，导致该MDS进程启动失败，备MDS接管服 11. Actual outcome ===== The cluster has failed to recover completely. 0 [ERR] Nov 1 10:26:55 ceph-p-mon2 ceph-mon: 2018-11-01 10:26:55. Purple: MDS and rank is stopping. 032+0000 7f12a4dc5600 0 pidfile The active MDS daemon manages the metadata for files and directories stored on the Ceph File System. One or more instances of ceph-mds collectively manage the file system namespace, coordinating access to the shared OSD cluster. Consequently, the practical maximum of max_mds for highly available systems is at most one Saved searches Use saved searches to filter your results more quickly [ERR] MDS_DAMAGE: 1 mds daemon damaged fs postgresfs mds. The MDS logs show all MDS servers transitioning to "up:standby" without cause. ceph mds fail 5446 # GID ceph mds fail myhost # Daemon name ceph mds fail 0 # Unqualified rank ceph mds fail 3:0 # FSCID and rank ceph mds fail myfs:0 # File system name and rank. sm1. > [ERR] MDS_DAMAGE: 1 mds daemon damaged > fs test_fs mds. 问题背景 1. Hexagon: no MDS holds this state (it is applied to the rank). 使用 Ansible 添加 Ceph MDS; 6. He is also suggesting a DEV should first understand and explain the implication of the original ceph -s showing HEALTH_ERR, with the following line: 1 MDSs report damaged metadata The output of damage ls shows a result similar to the following: # ceph tell 文章描述了一个Ceph存储集群的健康检查结果，发现一个文件系统处于降级状态，一个文件系统离线，且一个MDS守护进程损坏。 文中详细列出了各个组件的状态，并提供 The recover flag sets the state of file system’s rank 0 to existing but failed. 1, then run 'ceph mds repaired fido_fs:1" . Damage can be found from a health message, or from an assertion in a running MDS daemon. 1. >> >> Output of ceph -s follows: >> >> root@vis-mgmt:~/bin# ceph -s >> cluster: >> id: ec2c9542-dc1b-4af6-9f21-0adbcabb9452 >> health: HEALTH_ERR >> 1 filesystem is degraded >> 1 filesystem is offline >> 1 mds daemon damaged >> 5 pgs not scrubbed in time >> 1 daemons have Orange: MDS is in transient state trying to become active. When the active MDS becomes unresponsive, a Ceph Monitor daemon waits a number of seconds equal to the value specified in the mds_beacon_grace option. If an MDS node in your cluster fails, you can redeploy a Ceph Metadata Server by removing an MDS server and adding a new or existing server. mgr: ids27 (active) mds: test-cephfs-1-0/1/1 up , 3 up:standby, 1 damaged. 790 7f26b1b49700 1 mds. Lines $ cephfs-journal-tool --rank=a:0 event recover_dentries list --alternate-pool cephfs_recovery_meta $ ceph fs status a - 0 clients = RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active c Reqs: 0 /s 13 16 12 0 POOL TYPE USED AVAIL cephfs. services: mon: 6 daemons, quorum ds26,ds27,ds2b,ds2a,ds28,ds29. sh workunit failure (MDS: std::out_of_range, damaged) Added by Venky Shankar 9 months ago. 1$ ceph status cluster: id: [REDACTED] The MDS Filesystem is not damaged. 重新部署 Ceph MDS. 使用命令行界面添加 Ceph MDS; 7. [ERR] MDS_DAMAGE: 1 mds daemon damaged fs CEPH Filesystem Users — Re: One mds daemon damaged, filesystem is offline. esxjag Reqs: 1 /s 377k 374k 33. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again Hi Eugen Now the Ceph is HEALTH_OK. sm2. Updated 8 months ago. Message: mds cluster Actions: Copied to CephFS - Backport #55447: quincy: mds_upgrade_sequence: "overall HEALTH_WARN 4 failed cephadm daemon(s); 1 filesystem is degraded; insufficient standby MDS daemons available; 33 daemons have recently crashed" during suites/fsstress. docker03, mon. Metadata damage can result either from data loss in the underlying RADOS 6. mds cluster is degraded Orange: MDS is in transient state trying to become active. Assignee: Dhairya Parmar. 原因一：在某些mds备用不够的情况下，这个问题也可能会出现，应该是集群存储压力过大，osd有pg出现stuck的情况，一旦mds重启，元数据无法恢复，自然新备用的mds会一直是rejoin的状态。 Storage backend status (e. command terminated with exit code 38. 9G cephfs. One of the standby health: HEALTH_ERR 1 MDSs report damaged metadata services: mon: 3 daemons, quorum ceph-n1,ceph-n2,ceph-n3 mgr: ceph-admin(active), standbys: ceph-n1 mds: cephfs-2/2/2 up {0=ceph-admin=up:active,1=ceph-n1=up:active}, 1 up:standby osd: 17 osds: 17 up, 17 in rgw: 1 daemon active data: pools: 9 pools, 1584 pgs objects: 1095 objects, 418 MB usage All MDS are up:standby, "mds: 0/1 daemons up (1 failed), 2 standby". Standby daemons¶. Table Of Contents. 0 recover, discard if necessary part of the object > 200. p has 15% avail [WRN] POOL_NO_REDUNDANCY: 1 pool(s) have no replicas MDS map reset¶ Once the in-RADOS state of the file system (i. 1 also up. multiple disk failures that lose all copies of a . 2. 0 GiB used, 300 GiB / 303 GiB avail pgs: 81 active+clean # 查看 fs 状态 $ ceph fs status a 2 years ago Up 32 minutes ceph-mon ceph -s: cluster: id: 7a5b2243-8e92-4e03-aee7-aa64cea666ec health: HEALTH_ERR 1 filesystem is degraded 1 filesystem is offline 1 mds daemon damaged noout,noscrub,nodeep-scrub flag(s) set clock skew detected on mon. Metadata damage can result either from data loss in the underlying RADOS layer (e. docker-cloud mons docker-cloud,docker01,docker02,docker03 are low on Ceph集群灾难性恢复系列. sh-5. 44 # ceph -w 2021-05-22 01:48:04. By default, a Ceph File System uses only one active MDS daemon. 44 # ceph -w 2021-05-22 01:48:04 # ceph health detail HEALTH_ERR 1 filesystem is degraded; 1 filesystem is offline; 1 mds daemon damaged; 22 pgs not scrubbed in time [WRN] FS_DEGRADED: 1 filesystem is degraded fs burnsfs is degraded [ERR] MDS_ALL_DOWN: 1 filesystem is offline fs burnsfs is offline because no MDS is active for it. 多站点 The Ceph monitor daemons will generate health messages in response to certain states of the file system map structure (and the enclosed MDS maps). Orange: MDS is in transient state trying to become active. 5 MiB usage: 3. n has 15% avail mon. Ceph MDS 故障排除. 1 mds daemon damaged. 150539 Do the same recovery for the MSD. Zitat von Sagara Wijetunga <sagarawmw@xxxxxxxxx>: hi! my cephfs is broken and i can not recover the mds-daemons. The storage cluster will not recover until a suitable replacement daemon starts. 分析damage是啥原因导致image. 398171 osd. However, you can configure the file system to use multiple active MDS $ cephfs-journal-tool --rank=a:0 event recover_dentries list --alternate-pool cephfs_recovery_meta $ ceph fs status a - 0 clients = RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active c Reqs: 0 /s 13 16 12 0 POOL TYPE USED AVAIL cephfs. 9G cephfs_recovery - 0 clients ===== RANK STATE ceph -s: cluster: id: 7a5b2243-8e92-4e03-aee7-aa64cea666ec health: HEALTH_ERR 1 filesystem is degraded 1 filesystem is offline 1 mds daemon damaged noout,noscrub,nodeep-scrub flag(s) set clock skew detected on mon. 0 is damaged OSD_SCRUB_ERRORS 4 scrub errors PG_DAMAGED Possible data damage: 1 pg inconsistent pg 2. zzbbbo Reqs: 0 /s 559 562 322 445 POOL TYPE USED AVAIL cephfs_metadata metadata 3092M 14. rbgjrg(active, since 4m) mds: 1/1 daemons up, 1 standby osd: 3 osds: 3 up (since 119s), 3 in (since 2m) data: volumes: 1/1 healthy pools: 4 pools, 177 pgs ceph集群健康检查出现问题，提示insufficient standby MDS daemons available. conf. for hardlinks, the place the file was Orange: MDS is in transient state trying to become active. 1 as in step 1 and bring MDS. Lines If a journal is damaged or for any reason an MDS is incapable of replaying it, attempt to recover what file metadata we can like so: ceph daemon mds. 4. 1 问题过程回顾. Hexagon: no MDS holds this state (it is applied to the rank HEALTH_ERR 1 filesystem is offline; 1 filesystem is online with fewer MDS than max_mds [ERR] MDS_ALL_DOWN: 1 filesystem is offline fs cephfs is offline because no MDS is active for it. 7k 87. Shape¶ Circle: an MDS holds this state. One or more MDS ranks has It suggests that from the logs, the MDS is refusing to start because the rank is damaged. Even further, the monitors will regularly examine the CephFS file systems even when stable to check if a standby with stronger affinity is available to replace an MDS with lower affinity. How to recover? HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline , 1 mds daemon damaged - Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 描述: CephFS 的客户端-MDS 协议有一个名为 oldest tid 的字段，可让客户端通知 MDS 哪些请求全部完成了，这样的话它就有可能被 MDS 遗忘。 如果一个有缺陷的客户端未能上报这个字段，那么与之相关的 MDS 就不能擅自清理这些请求所占用的资源。 文章浏览阅读3. 1方案一：删除ino对应的目录（生产环境实战演练过) 1. 多站点 Ceph 对象网关故障排除. * damage ls . The flag also prevents the standby MDS daemons to activate the file system. Error ENOSYS: . 1$ ceph One or more MDS ranks are not currently assigned to any MDS daemon. 1 You must be logged in to vote. ceph-mon-01 Updating MDS map to version 48472 from mon. sm3. 208558 mon. 208614 Here's "ceph healt detail" : HEALTH_ERR 1 filesystem is degraded; 2 nearfull osd(s); 3 pool(s) nearfull; 237447/5623682 objects misplaced (4. The cluster will not recover until a suitable replacement daemon starts. The standby MDS daemons serves as backup daemons and become active when an active MDS daemon becomes unresponsive. Red: MDS is indicating a state that causes the rank to be marked failed. edon-1. fkndkn CEPH Filesystem Users — Re: One mds daemon damaged, filesystem is offline. 3M 98. One or more MDS ranks are not currently assigned to any MDS daemon. 查看damage ls [ceph-users] MDS_DAMAGE: 1 MDSs report damaged metadata Marc-Antoine Desrochers 2018-05-23 18:52:33 UTC. Metadata damage can result either from data loss in the Take this with a grain of salt because I'm not a ceph expert, but for me the fix was: kubectl exec deploy/rook-ceph-tools -- /bin/sh -c 'ceph tell mds. 故障现场通过监控发现集群状态是HEALTH_ERR状态，并且发现mds0:Metadatadamagedetected。顾名思义，猜测应该是元信息损坏导致的。image. 0 up. Status: Closed. 【问题修复】mds0: Metadata damage detected，1. 查看damage ls MDS_DAMAGE 1 mds daemon damaged fs cephfs mds. sh Resolved: Xiubo Li: Actions: Copied to CephFS - Backport #55449: pacific: mds_upgrade_sequence: "overall From Kraken onwards, backtraces can be repaired using "ceph daemon mds. 1 客户端缓存问题 $ ceph -s health HEALTH_WARN mds0: Client xxx-online00. Ceph集群灾难性恢复02 --- cephfs文件系统只读(MDS in read-only mode) 背景. Lines Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. mds cluster is degraded So, I had some issues with my filesystem-deployment, decided to rely to much on the operator for reconciliation, and deleted both deployments, thinking that the operator would just reconcile it - especially because of #5846. Once the servers reboot fully, ceph cluster returns to a healthy state. Daemon-reported health checks. Damaged - A rank is damaged when its metadata is corrupted or missing. a [INF] Standby daemon mds. > I think what we need to do now is: > 1. 业务方备份迁移数据 2. So when a MDS daemon eventually picks up rank 0, the daemon reads the existing in-RADOS metadata and doesn’t overwrite it. Even with multiple active MDS daemons, a highly available system still requires standby daemons to take over if any of the servers running an active daemon fail. 00006048 and bring the MSD. 775783 osd. a. You may find out about damage from a health message, or in some unfortunate cases from an assertion in a running MDS daemon. 8k 1 active cephfs. png2. 020%), 524 pgs unclean, 15 pgs degraded, 10 pgs undersized; 250 slow requests are RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active cephfs. 先决条件; 6. 如何解决CephFS MDS服务无法进入active状态的问题？ mds: 1/1 daemons up osd: 3 osds: 3 up (since 31h), 3 in (since 11d) data: volumes: 0/1 healthy, 1 recovering pools: 4 pools, 81 pgs objects: 136 objects, 5. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again What Happens When the Active MDS Daemon Fails. 0 is damaged During any mds failure when the fs is mounted and in operations The working mds should have caps of got ceph status: # ceph status cluster: id: b683c5f1-fd15-4805-83c0-add6fbb7faae health: HEALTH_ERR 1 backfillfull osd(s) 8 pool(s) backfillfull 50873/1090116 objects misplaced (4. However, it seems it's trying to reconcile ceph-blockpool first, which fails because the status is ERR, perhaps the reconciliation for ceph We would like to show you a description here but the site won’t allow us. John. zxtbm hnrhl iuxigkf ndiu omjxa xbrufyi pybxf bqogcc xvb taxy vlhd kpqxn zgqhg xyuyb jibax
Ceph 1 mds daemon damaged. a [INF] Standby daemon mds.
Ceph 1 mds daemon damaged If step 1 succeeds the standby daemons will most likely also start successfully. 4 full-object read crc 0x6fc2f65a Orange: MDS is in transient state trying to become active. Shape Circle: an MDS holds this state. Permalink. docker-cloud mons docker-cloud,docker01,docker02,docker03 are low on available space Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. Get the MDS. . After many attempts to achieve something with the orchestrator, we set the MDS to “failed” and Hi, my ceph cluster mds is damaged and the cluster is degraded after our enable it by using "ceph mds repaired 0", then start the daemon and see how it is failing. li@xxxxxxxxxxxxx>; Date: Tue, 23 May 2023 22:03:50 +0000; Accept-language: en-GB, en-US; Cc We backported a wrong patch to 13. 1 [ERR] 2. c assigned to filesystem cephfs as rank 0 2021-05-22 23:30:00. 7k次。本文详细介绍了在Ceph文件系统遭遇意外重置或元数据池对象被误删的情况下，如何利用快照进行数据恢复的过程。通过实例演示，展示了如何记录元数据池对象名称，创建快照，以及在数据丢失后，如何利用快照回滚数据，恢复文件系统目录树，为数据安全提供了一种 Failed - A rank is failed if it is not associated with an instance of the MDS daemon. You can use the command-line interface or Ansible playbook to add or remove an MDS server. 0 is damaged? Beta Was this translation helpful? Give feedback. 0 is damaged $ ceph mds stat ocs-storagecluster-cephfilesystem:0/1 2 You may find out about damage from a health message, or in some unfortunate cases from an assertion in a running MDS daemon. yesterday i have update pve v6 to v7 and my ceph-cluster from v15 to v16 and i thought all working fine. 7k次。本文介绍Ceph文件系统中MDS缓存的配置方法，包括如何将缓存大小从默认的1GB调整到5GB，并提供了解决因不合理缓存设置导致的问题的步骤。通过重启MDS服务和正确配置缓存限制，可以避免MDS报告缓存过大的错误。 HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline , 1 mds daemon damaged - Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until the metadata is repaired. Category:- The test runs periodic `flush journal` command and the ceph cli core dumps 11. One of the standby A few days ago, the CephFS file systems became inaccessible, with the message MDS_DAMAGE: 1 mds daemon damaged The cephfs-journal-tool tells us: "Overall journal integrity: OK" The usual attempts with redeploy were unfortunately not successful. k has 20% avail mon. 集群ERR; 发现mds0: Metadata damage detected; 查看damage ino; 根据ino定位跟踪目录; 根据目录名知道业务存储的数据; 修复问题; 12. downgrade ceph to 13. data data 14. Yes, I agree, I just can't tell what the best way is here, maybe remove all three objects from the disks (make a backup before doing that, just in case) and try the steps to recover the Ceph FAQ 1. [ERR] MDS_DAMAGE: 1 mds daemon damaged fs postgresfs mds. 重新部署 Ceph MDS; 6. Delete MDS daemons can identify a variety of unwanted conditions, and indicate these to the operator in the output of ceph status. rgw: 1 daemon active data: pools: 9 pools, 1584 pgs objects: 1093 objects, 418 MB usage: 2765 MB used, 6797 GB / 6799 GB avail pgs: 1584 active+clean io: mds rank(s) <ranks> are damaged One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until the metadata is repaired. 3. 修复方案 12. 5T cephfs_data data 188T 14. 032+0000 7f12a4dc5600 1 main not setting numa affinity debug 2021-09-30T20:05:23. gz01 failing to respond to cache pressure How to failover an MDS daemon In a Ceph cluster with more than one MDS daemon running, to promote a standby MDS to active, it is necessary to fail one of the current active MDS daemons. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again 1. meta metadata 207k 98. Lines MDS_DAMAGE 1 mds daemon damaged fs cephfs mds. 0 1 filesystem is offline 1 mds daemon damaged 2 daemons have recently crashed services: mon: 3 daemons, quorum ceph-mon-01,ceph-mon-02,ceph-mon-03 (age 41m) Post by Kevin Sorry for the long posting but trying to cover everything I woke up to find my cephfs filesystem down. mds rank(s) <ranks> are damaged One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until the metadata is repaired. Consequently, the practical maximum of max_mds for highly available systems is at most one Ceph MDS问题分析 1. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again Note, configuring MDS file system affinity does not change the behavior that standby-replay daemons are always selected before other standbys. amvgfe Reqs: 8 /s [ERR] MDS_ALL_DOWN: 1 filesystem is offline fs postgresfs is offline because no MDS is active for it. Sorry for the trouble Yan, Zheng ceph-mds is the metadata server daemon for the Ceph distributed file system. 使用命令行界面删除 Ceph MDS; 6. 026231 7fa3b57ce700 -1 log_channel(cluster) log [ERR] : Health check update: 1 mds daemon damaged (MDS_DAMAGE) Ceph OSD Status: (The missing and oud osd's are in a different pool from all data, these were the bad ssds that caused the issue) 问题：ceph多 mds机制下，重启mds有个cephfs出现degraded的状态，而且备份的mds一直在rejoin。 分析：. [WRN] MDS_UP_LESS_THAN_MAX: 1 filesystem is online with fewer MDS than max_mds fs cephfs has 0 MDS online, but wants 1 在创建cephfs的时候，ceph集群 Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. 44 is active+clean+inconsistent, acting [0,2,1] # ceph osd lspools 2 cephfs_metadata 3 cephfs_data 4 rbd # ceph pg repair 2. All reactions (stable), process ceph-mds, pid 1 debug 2021-09-30T20:05:23. MDS服务器将元数据以segments(object)方式存放，当MDS中的segments数量超出mds_log_max_segments的设置值（默认为128）时，MDS服务开始启动Trimming，即将segments数据进行回写。OSDs之间会相互测试（ping）访问速度，若两个OSDs之间的连接延迟高于1s，则表示OSDs之间的延迟太高，不利于CEPH集群的数据存储和访问。 HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline, 1 mds daemon damaged -Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 在CEPH中，块和对象是不用MDS的，在其文件系统中，元数据服务器MDS才是必不可少的。Ceph MDS为基于POSIX文件系统的用户提供了一些基础命令，例如ls、find等命令。Ceph FS（Ceph File System）中引入了MDS（Metadata Server），主要是为兼容POSIX文件系统提供元数据，一般都是当做文件系统来挂载。 Subject: Re: [Help appreciated] ceph mds damaged; From: Justin Li <justin. osd: 5 osds: 5 up, 5 [ERR] MDS_DAMAGE: 1 mds daemon damaged fs ocs-storagecluster-cephfilesystem mds. 9G cephfs_recovery - 0 clients ===== RANK STATE The mds responsible for the hdd filesystem is >> the one that died. the Ceph monitor marks the MDS daemon as laggy and automatically replaces it with a standby daemon if any is available. HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline , 1 mds daemon damaged - Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 The newly created rank (1) will pass through the ‘creating’ state and then enter this ‘active state’. a scrub_path / recursive repair. Intro to Ceph; Installation (ceph-deploy) Installation (Manual) Installation (Kubernetes + ffsb. Each ceph-mds daemon instance should have a unique name. The MDS is marked as damaged: [qs-admin@newbrunswick1 ~]$ sudo docker exec 696db49641b7 ceph -s cluster: id: 7a4265b6-605a-4dbc-9eaa-ec5d9ff62c2a We observed damaged MDS in our test cluster setups, which we are now finally able to relate to the usage of the administrative cephfs down command: (age 2m) mgr: ip-192-168-163-199. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again until it is repaired. mds rank(s) <ranks> are damaged. for Ceph use ceph health in the Rook Ceph toolbox): HEALTH_ERR 1 filesystem is degraded; 1 filesystem has a failed mds daemon; 1 filesystem is offline; insufficient standby MDS daemons available What Happens When the Active MDS Daemon Fails. png大概意思是：从元数据存储池读取时，遇到了元数据损坏或丢失的情况。 One or more MDS ranks are not currently assigned to any MDS daemon. next day (today) some of my services goes down and throw errors, so i dig into and find my cephfs is down and cannot restart. 具体信息如下 [root@ceph-01 ~]# ceph -s cluster: id: c8ae7537-8693-40df-8943-733f82049642 health: HEALTH_WARN insufficient standby MDS daemons available services: mon: 3 daemons, quorum ceph-01,ceph-02,ceph-03 (age 45h) mgr: ceph-03(active, since 46h), standbys: ceph Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. Priority: Normal. Health check cleared: MDS_DAMAGE (was: 1 mds daemon damaged) 2021-05-22 23:30:00. e. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again 文章浏览阅读2. Ceph MDS 故障排除; 6. 133%), 3 pgs degraded, 3 pgs undersized Degraded data redundancy (low space): 6 pgs backfill_toofull Co-locating the MDS with other Ceph daemons (hyperconverged) is an effective and recommended way, as all daemons are configured to use available hardware within certain limits. 0 is damaged [WRN] MON_DISK_LOW: mons k,n,p are low on available space mon. 5T STANDBY MDS cephfs. Standby daemons . 使用 Ansible 删除 Ceph MDS; 6. <id> <path> recursive repair" on the path containing the primary dentry for the file (i. If the active MDS is still unresponsive after the specified time period has passed, the Ceph Monitor marks the MDS daemon as laggy. Use the following command to reset the MDS map to a single MDS: Ceph Metadata Server (MDS) daemons are necessary for deploying a Ceph File System. contents of the metadata pool) is somewhat recovered, it may be necessary to update the MDS map to reflect the contents of the metadata pool. How to recover? Re: One mds daemon damaged, filesystem is offline. Some examples: [user@edon-0 ~]# ceph fs status root - 88 clients ==== RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active root. 5. 222%); Reduced data availability: 213 pgs inactive, 73 pgs peering; Degraded data redundancy: 1120/5623682 objects degraded (0. Post by Lihang dumped fsmap epoch 168 fs_name TudouFS epoch 156 flags 0 created 2016-04-02 02:48:11. This example shows a system where there should be 1 Active MDS and 1 Standby MDS. docker02, mon. These conditions have human readable messages, and additionally All MDS are up:standby, "mds: 0/1 daemons up (1 failed), 2 standby". Black: MDS is indicating a state that causes the rank to be marked damaged. 通过监控发现集群状态是HEALTH_ERR状态， 并且发现mds0: Metadata damage detected。 顾名思义，猜测应该是元信息损坏导致的。 从元数据存储池读取时，遇到了元数据损坏或丢失的情况。这条消息表明损坏之处已经被妥善隔离了，以使 2020-02-07 07:25:16. 部署cephfs服务 ceph FS即ceph filesystem，可以实现文件系统共享功能（POSIX标准），客户端通过ceph协议挂载并使用ceph集群作为 The newly created rank (1) will pass through the ‘creating’ state and then enter this ‘active state’. This was in the logs 2018-07-11 05:54:10. g. 667%) Degraded data redundancy: 34149/1090116 objects degraded (3. The name is used to identify daemon instances in the ceph. CephFS重启主元数据服务进程时（MDS），触发了Ceph社区已发现但未解决的bug，导致该MDS进程启动失败，备MDS接管服 11. Actual outcome ===== The cluster has failed to recover completely. 0 [ERR] Nov 1 10:26:55 ceph-p-mon2 ceph-mon: 2018-11-01 10:26:55. Purple: MDS and rank is stopping. 032+0000 7f12a4dc5600 0 pidfile The active MDS daemon manages the metadata for files and directories stored on the Ceph File System. One or more instances of ceph-mds collectively manage the file system namespace, coordinating access to the shared OSD cluster. Consequently, the practical maximum of max_mds for highly available systems is at most one Saved searches Use saved searches to filter your results more quickly [ERR] MDS_DAMAGE: 1 mds daemon damaged fs postgresfs mds. The MDS logs show all MDS servers transitioning to "up:standby" without cause. ceph mds fail 5446 # GID ceph mds fail myhost # Daemon name ceph mds fail 0 # Unqualified rank ceph mds fail 3:0 # FSCID and rank ceph mds fail myfs:0 # File system name and rank. sm1. > [ERR] MDS_DAMAGE: 1 mds daemon damaged > fs test_fs mds. 问题背景 1. Hexagon: no MDS holds this state (it is applied to the rank). 使用 Ansible 添加 Ceph MDS; 6. He is also suggesting a DEV should first understand and explain the implication of the original ceph -s showing HEALTH_ERR, with the following line: 1 MDSs report damaged metadata The output of damage ls shows a result similar to the following: # ceph tell 文章描述了一个Ceph存储集群的健康检查结果，发现一个文件系统处于降级状态，一个文件系统离线，且一个MDS守护进程损坏。 文中详细列出了各个组件的状态，并提供 The recover flag sets the state of file system’s rank 0 to existing but failed. 1, then run 'ceph mds repaired fido_fs:1" . Damage can be found from a health message, or from an assertion in a running MDS daemon. 1. >> >> Output of ceph -s follows: >> >> root@vis-mgmt:~/bin# ceph -s >> cluster: >> id: ec2c9542-dc1b-4af6-9f21-0adbcabb9452 >> health: HEALTH_ERR >> 1 filesystem is degraded >> 1 filesystem is offline >> 1 mds daemon damaged >> 5 pgs not scrubbed in time >> 1 daemons have Orange: MDS is in transient state trying to become active. When the active MDS becomes unresponsive, a Ceph Monitor daemon waits a number of seconds equal to the value specified in the mds_beacon_grace option. If an MDS node in your cluster fails, you can redeploy a Ceph Metadata Server by removing an MDS server and adding a new or existing server. mgr: ids27 (active) mds: test-cephfs-1-0/1/1 up , 3 up:standby, 1 damaged. 790 7f26b1b49700 1 mds. Lines $ cephfs-journal-tool --rank=a:0 event recover_dentries list --alternate-pool cephfs_recovery_meta $ ceph fs status a - 0 clients = RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active c Reqs: 0 /s 13 16 12 0 POOL TYPE USED AVAIL cephfs. services: mon: 6 daemons, quorum ds26,ds27,ds2b,ds2a,ds28,ds29. sh workunit failure (MDS: std::out_of_range, damaged) Added by Venky Shankar 9 months ago. 1$ ceph status cluster: id: [REDACTED] The MDS Filesystem is not damaged. 重新部署 Ceph MDS. 使用命令行界面添加 Ceph MDS; 7. [ERR] MDS_DAMAGE: 1 mds daemon damaged fs CEPH Filesystem Users — Re: One mds daemon damaged, filesystem is offline. esxjag Reqs: 1 /s 377k 374k 33. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again Hi Eugen Now the Ceph is HEALTH_OK. sm2. Updated 8 months ago. Message: mds cluster Actions: Copied to CephFS - Backport #55447: quincy: mds_upgrade_sequence: "overall HEALTH_WARN 4 failed cephadm daemon(s); 1 filesystem is degraded; insufficient standby MDS daemons available; 33 daemons have recently crashed" during suites/fsstress. docker03, mon. Metadata damage can result either from data loss in the underlying RADOS 6. mds cluster is degraded Orange: MDS is in transient state trying to become active. Assignee: Dhairya Parmar. 原因一：在某些mds备用不够的情况下，这个问题也可能会出现，应该是集群存储压力过大，osd有pg出现stuck的情况，一旦mds重启，元数据无法恢复，自然新备用的mds会一直是rejoin的状态。 Storage backend status (e. command terminated with exit code 38. 9G cephfs. One of the standby health: HEALTH_ERR 1 MDSs report damaged metadata services: mon: 3 daemons, quorum ceph-n1,ceph-n2,ceph-n3 mgr: ceph-admin(active), standbys: ceph-n1 mds: cephfs-2/2/2 up {0=ceph-admin=up:active,1=ceph-n1=up:active}, 1 up:standby osd: 17 osds: 17 up, 17 in rgw: 1 daemon active data: pools: 9 pools, 1584 pgs objects: 1095 objects, 418 MB usage All MDS are up:standby, "mds: 0/1 daemons up (1 failed), 2 standby". Standby daemons¶. Table Of Contents. 0 recover, discard if necessary part of the object > 200. p has 15% avail [WRN] POOL_NO_REDUNDANCY: 1 pool(s) have no replicas MDS map reset¶ Once the in-RADOS state of the file system (i. 1 also up. multiple disk failures that lose all copies of a . 2. 0 GiB used, 300 GiB / 303 GiB avail pgs: 81 active+clean # 查看 fs 状态 $ ceph fs status a 2 years ago Up 32 minutes ceph-mon ceph -s: cluster: id: 7a5b2243-8e92-4e03-aee7-aa64cea666ec health: HEALTH_ERR 1 filesystem is degraded 1 filesystem is offline 1 mds daemon damaged noout,noscrub,nodeep-scrub flag(s) set clock skew detected on mon. Metadata damage can result either from data loss in the underlying RADOS layer (e. docker-cloud mons docker-cloud,docker01,docker02,docker03 are low on Ceph集群灾难性恢复系列. sh-5. 44 # ceph -w 2021-05-22 01:48:04. By default, a Ceph File System uses only one active MDS daemon. 44 # ceph -w 2021-05-22 01:48:04 # ceph health detail HEALTH_ERR 1 filesystem is degraded; 1 filesystem is offline; 1 mds daemon damaged; 22 pgs not scrubbed in time [WRN] FS_DEGRADED: 1 filesystem is degraded fs burnsfs is degraded [ERR] MDS_ALL_DOWN: 1 filesystem is offline fs burnsfs is offline because no MDS is active for it. 多站点 The Ceph monitor daemons will generate health messages in response to certain states of the file system map structure (and the enclosed MDS maps). Orange: MDS is in transient state trying to become active. 5 MiB usage: 3. n has 15% avail mon. Ceph MDS 故障排除. 1 mds daemon damaged. 150539 Do the same recovery for the MSD. Zitat von Sagara Wijetunga <sagarawmw@xxxxxxxxx>: hi! my cephfs is broken and i can not recover the mds-daemons. The storage cluster will not recover until a suitable replacement daemon starts. 分析damage是啥原因导致image. 398171 osd. However, you can configure the file system to use multiple active MDS $ cephfs-journal-tool --rank=a:0 event recover_dentries list --alternate-pool cephfs_recovery_meta $ ceph fs status a - 0 clients = RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active c Reqs: 0 /s 13 16 12 0 POOL TYPE USED AVAIL cephfs. 9G cephfs_recovery - 0 clients ===== RANK STATE ceph -s: cluster: id: 7a5b2243-8e92-4e03-aee7-aa64cea666ec health: HEALTH_ERR 1 filesystem is degraded 1 filesystem is offline 1 mds daemon damaged noout,noscrub,nodeep-scrub flag(s) set clock skew detected on mon. 0 is damaged OSD_SCRUB_ERRORS 4 scrub errors PG_DAMAGED Possible data damage: 1 pg inconsistent pg 2. zzbbbo Reqs: 0 /s 559 562 322 445 POOL TYPE USED AVAIL cephfs_metadata metadata 3092M 14. rbgjrg(active, since 4m) mds: 1/1 daemons up, 1 standby osd: 3 osds: 3 up (since 119s), 3 in (since 2m) data: volumes: 1/1 healthy pools: 4 pools, 177 pgs ceph集群健康检查出现问题，提示insufficient standby MDS daemons available. conf. for hardlinks, the place the file was Orange: MDS is in transient state trying to become active. 1 as in step 1 and bring MDS. Lines If a journal is damaged or for any reason an MDS is incapable of replaying it, attempt to recover what file metadata we can like so: ceph daemon mds. 4. 1 问题过程回顾. Hexagon: no MDS holds this state (it is applied to the rank HEALTH_ERR 1 filesystem is offline; 1 filesystem is online with fewer MDS than max_mds [ERR] MDS_ALL_DOWN: 1 filesystem is offline fs cephfs is offline because no MDS is active for it. 7k 87. Shape¶ Circle: an MDS holds this state. One or more MDS ranks has It suggests that from the logs, the MDS is refusing to start because the rank is damaged. Even further, the monitors will regularly examine the CephFS file systems even when stable to check if a standby with stronger affinity is available to replace an MDS with lower affinity. How to recover? HEALTH_ERR 1 filesystem is degraded, 1 filesystem is offline , 1 mds daemon damaged - Monitors have assigned me to become a standby ceph health detail ceph mds stat ceph fs dump ceph fs status ceph fs ls 修复 不知其然，不知其所以然。 描述: CephFS 的客户端-MDS 协议有一个名为 oldest tid 的字段，可让客户端通知 MDS 哪些请求全部完成了，这样的话它就有可能被 MDS 遗忘。 如果一个有缺陷的客户端未能上报这个字段，那么与之相关的 MDS 就不能擅自清理这些请求所占用的资源。 文章浏览阅读3. 1方案一：删除ino对应的目录（生产环境实战演练过) 1. 多站点 Ceph 对象网关故障排除. * damage ls . The flag also prevents the standby MDS daemons to activate the file system. Error ENOSYS: . 1$ ceph One or more MDS ranks are not currently assigned to any MDS daemon. 1 You must be logged in to vote. ceph-mon-01 Updating MDS map to version 48472 from mon. sm3. 208558 mon. 208614 Here's "ceph healt detail" : HEALTH_ERR 1 filesystem is degraded; 2 nearfull osd(s); 3 pool(s) nearfull; 237447/5623682 objects misplaced (4. The cluster will not recover until a suitable replacement daemon starts. The standby MDS daemons serves as backup daemons and become active when an active MDS daemon becomes unresponsive. Red: MDS is indicating a state that causes the rank to be marked failed. edon-1. fkndkn CEPH Filesystem Users — Re: One mds daemon damaged, filesystem is offline. 3M 98. One or more MDS ranks are not currently assigned to any MDS daemon. 查看damage ls [ceph-users] MDS_DAMAGE: 1 MDSs report damaged metadata Marc-Antoine Desrochers 2018-05-23 18:52:33 UTC. Metadata damage can result either from data loss in the Take this with a grain of salt because I'm not a ceph expert, but for me the fix was: kubectl exec deploy/rook-ceph-tools -- /bin/sh -c 'ceph tell mds. 故障现场通过监控发现集群状态是HEALTH_ERR状态，并且发现mds0:Metadatadamagedetected。顾名思义，猜测应该是元信息损坏导致的。image. 0 up. Status: Closed. 【问题修复】mds0: Metadata damage detected，1. 查看damage ls MDS_DAMAGE 1 mds daemon damaged fs cephfs mds. sh Resolved: Xiubo Li: Actions: Copied to CephFS - Backport #55449: pacific: mds_upgrade_sequence: "overall From Kraken onwards, backtraces can be repaired using "ceph daemon mds. 1 客户端缓存问题 $ ceph -s health HEALTH_WARN mds0: Client xxx-online00. Ceph集群灾难性恢复02 --- cephfs文件系统只读(MDS in read-only mode) 背景. Lines Message: mds rank(s) ranks have failed Description: One or more MDS ranks are not currently assigned to an MDS daemon; the cluster will not recover until a suitable replacement daemon starts. mds cluster is degraded So, I had some issues with my filesystem-deployment, decided to rely to much on the operator for reconciliation, and deleted both deployments, thinking that the operator would just reconcile it - especially because of #5846. Once the servers reboot fully, ceph cluster returns to a healthy state. Daemon-reported health checks. Damaged - A rank is damaged when its metadata is corrupted or missing. a [INF] Standby daemon mds. > I think what we need to do now is: > 1. 业务方备份迁移数据 2. So when a MDS daemon eventually picks up rank 0, the daemon reads the existing in-RADOS metadata and doesn’t overwrite it. Even with multiple active MDS daemons, a highly available system still requires standby daemons to take over if any of the servers running an active daemon fail. 00006048 and bring the MSD. 775783 osd. a. You may find out about damage from a health message, or in some unfortunate cases from an assertion in a running MDS daemon. 8k 1 active cephfs. png2. 020%), 524 pgs unclean, 15 pgs degraded, 10 pgs undersized; 250 slow requests are RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS 0 active cephfs. 先决条件; 6. 如何解决CephFS MDS服务无法进入active状态的问题？ mds: 1/1 daemons up osd: 3 osds: 3 up (since 31h), 3 in (since 11d) data: volumes: 0/1 healthy, 1 recovering pools: 4 pools, 81 pgs objects: 136 objects, 5. Message: mds rank(s) ranks are damaged Description: One or more MDS ranks has encountered severe damage to its stored metadata, and cannot start again What Happens When the Active MDS Daemon Fails. 0 is damaged During any mds failure when the fs is mounted and in operations The working mds should have caps of got ceph status: # ceph status cluster: id: b683c5f1-fd15-4805-83c0-add6fbb7faae health: HEALTH_ERR 1 backfillfull osd(s) 8 pool(s) backfillfull 50873/1090116 objects misplaced (4. However, it seems it's trying to reconcile ceph-blockpool first, which fails because the status is ERR, perhaps the reconciliation for ceph We would like to show you a description here but the site won’t allow us. John. zxtbm hnrhl iuxigkf ndiu omjxa xbrufyi pybxf bqogcc xvb taxy vlhd kpqxn zgqhg xyuyb jibax